No one ahould be defined by any one thing. But cultural identity is a big part of what shapes a person and thats not a bad or good thing. Its just how people are. I think culture is important but you shouldnt go along all the time with whatever an aspect of social norms is telling you.
Neither! And no, Brian, you're wrong. Ethnicity is blood based. Nationality is pretty much a legal thing by the modern standards, unless you mean something like Cherokee nation, which this doesn't refer to. I don't think people should really need these things to define them. If they want to use either I think that's their choice, but don't push either on them.
TheMarquis, definition of ethnicity - noun; the fact or state of belonging to a social group that has a common national or cultural tradition. There is nothing wrong about what I said, your nationality IS apart of your ethnic identity. Korean-American is an ethnicity. German-American is an ethnicity. African-American is an ethnicity. Your ethnic identity is not solely determined by the color of your skin, but also your national, religious, linguistic and cultural heritage.